Priming- device for explosion-motors



W. C. A. SIEVERTS.

PRIMING DEVICE FOR EXPLOSION MOTORS.- APPLICATION flLEDDEC. 24. 1'91 1,323,651. Patented Dec. 2,1919.

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UNITED STATES rnrnn ornion.

WILHELM G. A. SIEVERTS, 0F QUINCY, MASSACHUSETTS, ASSIGNOR TO LEWIS C.

MARSHALL, OF EAST "WALPOLE, MASSACHUSETTS.

PRIMING DEVICE FOR EXPLOSION-MOTORS.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application filed December 24, 1917. Serial No. 208,538.

To all whom it may concern:

Be it known that I, VVILHELM G. A. Smv- ERTS, citizen of the United States of America, and resident of Quincy, in the countyof Norfolk and State of Massachusetts, have invented new and useful Improvements in Priming Devices for ExplosionfMotors, of which the following is a specification.

This invention relates'to priming devices for explosion motors of the type adapted to provide an enriched explosive mixture in the cylinder of the motor at the time of start ing, so that a low temperature in the carbureter or other chambers of the motor will not prevent the initial explosions, and which shall also be adapted for other related uses.

I am aware of priming devices of the prior art more or less assisting the operation of injecting into the cylinders or intake manifold of an explosion engine gasolene from the motor supply in order to enrich the contents of the explosion chambers before starting. So far as I am aware, such devices involve disadvantages such as necessitating manual labor on the part of the person starting the motor at the moment of starting, when his attention should be directed to other matters, (especially when the engine is the power plant of an automobile) or causing waste of priming fluid by inviting its injection before rather than during the starting movement of the motor, so that much of the vapor of the priming is exhausted from the engine before itcan be compressed and exploded.

The present invention provides a separate source of fluid for priming, decarbonizing or other uses and permits the fluid to be delivered into the explosion chamber at will, as during rather than before the starting movement of the motor, and when in operation for priming causes a minimum and controllable quantity of liquid to be thrown in a finely divided state into the intaken air during movement of the motor, thus insuring at least one compression and ignition period with a fully-enriched'charge. When hence to provide a reservoir and injection means adapted to be oper'atedfor priming or the like by an operator whose attention is engaged, as byworking a starting device for the motor; to provide adevice of the character above mentioned which shall be eflective in operation and inexpensive to manufacture and install; to provide such a device with 1mproved means forinjecting a volatile exploslve priming fluid into an air intake passage of the motorin a stateof fine division in order to securerelatively high saturation of the cold air in the intake passage, and thus certainly to provide an explosive mixture; and to provide for positively delivermg a desired charge of priming or other liquid without waste of the liquid.

I will now explain the invention in connection with species illustrating the genus defined by the claims- Referringto the accompanying drawings,

Flgure 1 is a Verticalsection, through the dash-board and the intake manifold of the engine of an automobile illustrating one form of the device;

F 2 is a section on line 22 of Fig.1;

Fig. 3 is an enlarged section similar to Fig. 1,'illustra ting a modification;

Fig. 4 is a right-hand side elevation of the device shown in Fig. 3, and

Fig. 5 is .a detail plan of part 'ofthe pump. j As shown in Fig. l on any place c0nvenlent to the operator, for instance on the dash-board lof a motor car, a reservoir 2 for liquid or gas, for instance a volatile fpriming fluid 8 such as gasolene, rhigolene,

an ether, is fastened by conventhe parts being held assembled and held gas tight by screws 7 in holes in the heads 4 taking into tapped holes in an annular flange 8 of the reservoir 2. If desired a packing gasket, paste or cement may be used to make the joint tight. Attached to, and preferably integral with and inside of the reservoir 2, a pump cylinder 10 is provided. A preferred construction is that shown in which the bore of the cylinder i 7 opens opposite to the opening of the reser voir 2, so that a screw plug 12 having aguide bore 13 and a flange 14 may be screwed -into the threaded end of the bore of the cylmeans for supporting the reservoir 2 and its attachments on the dash-board.

The cylinder 10 may have an intake opening, as at 15, and a delivery port 9, and be provided with a suitable pump piston, as

the mushroom-valve plunger 16 of any usual 7 construction having a hand rod 17 passing through the bore 13 in the head 12. Rod 17 is provided with any convenient form of head for hand operation, as at 18. Preferably the plug 12 iscounterbored at 19 to receive a part of the head 18, and the wall of V the counter-bored part is slotted at 20 to form a bayonet-cflutch interlocking. with projections 21 from the head 18when the piston is forced in and turned onrits axis. By this construction the pump plunger may be locked inits inmost position against pres sure in the pump cylinder 10.

The object of the pump 10, etc, is to create an elastic fluid pressure above the liquid 3 in the tank or reservoir 2. The port 9 in cylinder 10 is provided with a spring actuated check valve 22 of the puppet type shown having its stem conveniently guided, as in a bore in a round lug 23 of the head 4, the spiral spring 24 surroundlng the lug 23 and bearing on the valve 22 to hold it seated.

The reservoir 2 is provided with a filling spout 25 having a gas-tight closure 26 of any desired kind.

A suitable educt opening 27 forthe reservoir 2 is controlled by a hand valve 28 of any desired construction and a pipe 29 with any usual form of connections30 is arranged in a convenient place to conduct the fluid 3 to the intake manifold 32 of the engine. The manifold is tapped at 33 to receive a threaded plug 34 having a central opening and a nozzle 35 preferably formed as shown as a tube having one closed end and a series of fine lateral perforations 36 near the closed end. Any suitable form of union 37 may hold the connection 30 and pipe 29 in communication with nozzle 35. 7

When the above described form of the device is in use, the reservoir 2 being filled to the desired extent with a volatile explosive liquid, the operator before starting 7 will. work the handle 18 for a few strokes,

thus raising the comparatively small volume of air or gas in the reservoir 2 to a relatively high pressure. ;Now upon operation of the 'usual starting motor and then opening the valve 28 duringthe necessary time, a fine spray, of an amount of priming fluid measured by the length of time valve 28 is held open, is thrown into the intake manifold through the nozzle 35. A. nozzle constructed as described is verv 'e fl'ective to deliver a finely divided spray. 'A relatively high saturationofthe intaken air instantly ensues, and the engine starts with ease,"if the fluid 3 is a suitable fluid readily volatile into a vapor highly explosive when mixed with air. It will be understood that the conveniently placed valve 28 can be operated with one hand without withdrawing atteu tion from'the startingand other controls.

In the modification shown in Figs. 3 and 4 the nozzle 35, pump 1.0, reservoir 2 and appurtenant devices may be the same as above mentioned, but instead of the valve 28' athree way' valve 40' having an air intake 41 and an educt passage 42 manually controlled, asby a conical valve member. 43 held to its seat by a spring45 and having astem46 is employed. A hand-operated index 44 sweeping a dial 47 is connected to the stem.

46 for moving and indicating the position of the valve member 43. When in theposition illustrated in Fig. 4, index 44 shows that priming fluid is being sprayed at noz zle 35.

If now the member 44 is turned to either right or left to the position marked Stop convenient means for doing this without disturbance of the use of the device for priming at starting.

It is now a famlhar practice to inject into the cyhnders or passages of an explosion motor ingredlents not essential to the operation of the motor to alter the behavior of the exploding charge under expansion or to prevent carbon deposit, or for other purposes. It has been proposed to add water, or kerosene, or emulsions of. water and certain oils to the charge for one or more of these purposes. ,The device described is readily adapted to provide a source of supply and means for the measured injection of such ingredients at thedesired times, as will be apparent. i

What I claim is: V V

1. A priming devicefor' explosion motors having a source of fuel supply for the motor, a nozzle adapted to spray fluid into an intake passage of the motor, aseparate closed reservoir adapted to holdaipr'iming liquid, a pump cylinder therein for creating air-pressure in the reservoir and integral with the Walls of the reservoir, a pipe connection between said reservoir and nozzle, and a three-way valve normally holding said pipe closed adapted upon operation either to connect said pipe to the liquid in the reservoir for priming or to connect said pipe to the atmosphere, whereby to dilute the explosive charge, said nozzle having a closed end and lateral perforations.

2. A priming device for explosion motors of motor vehicles having therein a closed reservoir for priming liquid and a pump cylinder within and integral With the reservoir, in combination with a closure for the pump-cylinder constituting means for attaching the reservoir and pump to the dashboard of the vehicle.

3. A pressure reservoir for explosion motor priming fluid comprising therein a pump-cylinder integral with the walls of the reservoir, a port in one end of the pumpcylinder, a valve for the port, and a closure for the reservoir having thereon a guide for the valve. 7

4. A priming device for explosion motors of motor vehicles having therein a closed reservoir for priming liquid and a pump cylinder Within and integral with the reservoir, in combination with a flanged closure for the pump cylinder whereby the dashboard of the vehicle is clamped between the end of the reservoir and said flange to support the reservoir on the dashboard.

Signed by me at Boston, Massachusetts, this 18th day of December, 1917.

WILHELM C. A. SIEVERTS. 

